Six-year-old Ryan Ravellette is a happy and sociable child; he has a smile that can light up a room.
But his beaming smile both belies and reveals a genetic condition that will affect him for the rest of his life -- and make normal communication all but impossible for the upbeat little boy.
Ryan is one of a few thousand children in the United States who has Angelman syndrome, a condition associated with severe cognitive and developmental disorders, as well as seizures.
What sets this...Full Story